Description
Live Electrical KR7311/220 Voltage Protection Relay
Single Phase Over & Under Voltage Protection
The Live Electrical KR7311/220 Voltage Protection Relay is designed to safeguard electrical installations from voltage fluctuations by automatically disconnecting the supply when unsafe conditions occur. Ideal for residential and commercial applications, this relay protects sensitive equipment from damage caused by over-voltage and under-voltage events.
With adjustable voltage thresholds and delay settings, the device ensures flexible configuration to suit a wide range of installations. Once voltage levels return to normal, the relay automatically reconnects the circuit, eliminating the need for manual intervention.
The Live Electrical KR7311/220 Voltage Protection Relay is DIN rail mounted for quick installation and features clear LED indicators for power and operational status, making it easy to monitor system performance.
Key Features
- Automatic disconnection during over and under voltage conditions
- Auto reset function when voltage returns to normal
- Adjustable over-voltage and under-voltage thresholds (0–20%)
- Adjustable time delay (0.1–10 seconds)
- Prevents nuisance tripping from transient voltage fluctuations
- LED indicators for power and working status
- Compact DIN rail mounting design
- Reliable protection for electrical equipment and circuits
Technical Specifications
- Model: KR7311/220
- Monitoring Type: Single Phase
- Rated Voltage: AC 220V
- Frequency: 50/60Hz
- Output Contact: SPDT
- Over Voltage Range: 0–20%
- Under Voltage Range: 0–20%
- Time Delay: 0.1–10 seconds
- Response Time: 0.5 seconds
- Contact Rating: AC-15 3A / 250VAC
- Mounting: DIN Rail
- Operating Temperature: -10°C to +55°C
- Voltage Accuracy: ±2%
